Defined Contribution Pension Plan (Details Narrative) - USD ($)		12 Months Ended
Jan. 02, 2018	Dec. 31, 2018	Dec. 31, 2017
Employee's contribution maximum percentage	100.00%		50.00%
Employer match percentage	1.00%		3.00%
Contributions by company		$ 136,000	$ 103,000
Additional Contribution [Member]
Employee's contribution maximum percentage	50.00%
Employer match percentage	3.50%

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration